now browsing by tag


SIP Primer from ESI

ESI shares insight on how resellers can help businesses navigate and implement SIP trunking.

A SIP Primer

Courtesy of ESI, a primer on SIP trunking technology.


SIP-itty doo da

Curious about SIP (Session Initiation Protocol)? Learn what is and how it works from this very detailed Avaya overview.


avaya logo